is it possible to make calls to external URLs like webhooks or input nodes of node-red, e.g.?

i found information about how to get data from a cloud url to the node, or how to fetch data from the cloud store. but i could not figure out how i could make a call to a url when e.g. pressing a switch on the node. i could poll the cloud store for the data – but this will produce unnecessary traffic to the cloud.

the best would probably be to have a “redirect” on the cloud store so that we could have a third option “node to web” with an input field for the url to be called on arriving data. the data from the node could simply be a get parameter (named like the variable) for now. that would cover many use cases already.